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A240786 Number of 5Xn 0..1 arrays with no element equal to fewer vertical neighbors than horizontal neighbors, with new values 0..1 introduced in row major order 1
16, 111, 459, 2167, 10150, 47920, 226532, 1071982, 5074441, 24028807, 113785341, 538857251, 2551907524, 12085420318, 57234822524, 271056496272, 1283688860005, 6079388685605, 28791225250367, 136351659911471, 645744522623364 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 5 of A240783

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

FORMULA

Empirical: a(n) = 10*a(n-1) -35*a(n-2) +50*a(n-3) +23*a(n-4) -204*a(n-5) +114*a(n-6) +684*a(n-7) -1284*a(n-8) -309*a(n-9) +4412*a(n-10) -5481*a(n-11) -90*a(n-12) +4826*a(n-13) -3964*a(n-14) -3408*a(n-15) +3143*a(n-16) +3475*a(n-17) -3191*a(n-18) +7943*a(n-19) +2119*a(n-20) +1380*a(n-21) -8241*a(n-22) -8523*a(n-23) +3733*a(n-24) -79*a(n-25) +1925*a(n-26) +1275*a(n-27) +131*a(n-28) -147*a(n-29) -286*a(n-30) for n>34

EXAMPLE

Some solutions for n=4

..0..1..0..1....0..1..0..1....0..1..1..0....0..0..1..0....0..1..1..0

..1..0..0..1....1..1..0..0....1..1..1..0....0..0..1..1....0..1..1..1

..0..0..1..1....1..0..1..0....1..1..1..0....0..0..1..1....1..0..1..1

..0..0..1..1....0..1..0..1....1..1..1..0....1..0..1..0....1..0..0..1

..0..1..0..1....1..0..1..0....0..1..1..0....1..0..1..0....1..0..0..1

CROSSREFS

Sequence in context: A107908 A177046 A234250 * A213754 A279425 A144449

Adjacent sequences:  A240783 A240784 A240785 * A240787 A240788 A240789

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 12 2014

STATUS

approved

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Last modified March 21 10:27 EDT 2019. Contains 321368 sequences. (Running on oeis4.)